Welding electrode



Dec, 2, 1947. H. J. STRETTON 2.43 .048 WELDING ELECTRQDE v Filed Dec. 1o, 1945 I $4. a: Q

' 1Y1; 218121501 .QTJZZEeZ-ZQZY/ Patented Dec. 2, 1947 WELDING ELECTRODE Henry Jackson Stretton, Gateshead-on-Tyne,

England, assignor to Fusarc Limited, Gateshead-on-Tyne, England Application December 10, 1945, Serial No. 633,990

In Great Britain December 27, 1944 1 Claim. 1

This invention has for its object to provide improved electrodes for use in electrical welding operations, and particularly continuous electrodes adapted to be employed in automatic or semi-autime enable the required electrical connection with the core to be efiected from the exterior of the electrode through the sheath by means of contact pieces held in slidable contact with the extomatic Welding machines. 5 posed surfaces of the sheath. Moreover, the In the accompanying sheet of explanatory sheath is electromagnetically non-inductive, and drawings: in consequence little or no magnetic efiect is set Figure 1 is a side view illustrating a length of up such as would deflect the welding are when electrode constructed in accordance with the the electrode is in action. Further the electrode invention. a P Of e coating being shown is sufliciently flexible to allow it to be coiled and broken away, and a part of the sheath being handled with a minimum of risk of detachment of shown in the process of being applied to the core. the flux material.

Figure 2 is a cross section of the electrode shown Having thus described my invention what I in Figure 1. claim as new and desire to secure by Letters Pat- In carrying the invention into effect as shown, ent is: I employ a wire core a made of mild steel, or any A welding electrode comprising the combinaother appropriate ferrous or non-ferrous alloy. tion of a metal core, a mesh-like metallic sheath Around the core a is wrapped a mesh-like mecomprising at least two oppositely coiled wire heltallic sheath b consisting of wire helices arranged ices on the core, each layer consisting of at least in at least two layers. Each of these layers con- 0 two helices, and a coating of flux material incorsists of two or more wires, helically coiled with porated with the meshes of the sheath and leavequal or unequal spaces between the convoluing exposed the outer surface of the outer layer. tions. Also the layers are wound in opposite directions and preferably so that the wires in the H NR JACKSON STRETTON- two layers cross each other at about a right angle as shown at the left hand side of Figure 1. REFERENCES CITED u s qu y a coating 0 f a app p fl The following references are of record in the material is applied, this material consisting of file'of t patent; the usual powdered minerals mixed with a binding agent. The coating 0 is applied by an extru- UNITED STATES PATENTS sion or other convenient process and is caused to Number Name Date fill the meshes or spaces between the wires form- 1,277,639 Pescatore Sept. 3, 1918 ing the mesh-like sheath b, excess coating ma- 1,517,311 Motte Dec. 2, 1924 terial being removed sufiiciently to expose the 1,760,534 Whiting et a1. May 27, 1930 outer surfaces of the outer wire layer as shown 1,768,998 Ross July 1, 1930 at the right hand side of Figure 1. If desired, the helically coiled wires forming the mesh-like FOREIGN PATENTS metallic sheath 1) may be secured to the core a. Number Country Date and to each other by spot or seam welding. 415,035 Great Britain Aug. 14, 1934 By this invention 1 am able effectively to in- 499,852 Great Britain Apr. 26, 1937 corporate concentrically with the electrode an 502,823 Great Britain Mar. 27, 1939 ample amount of flux material, and at the same 789,609 France Aug. 19, 1935 

